Application of a modified cannula insertion technique for selective endoscopic lumbar discectomy

作者：Ma, Lei; Chen, Wei; Yang, Sidong; Zhang, Di; Wang, Hui; Shen, Yong; Ding, Wenyuan; Zhang, Wei^*

来源：International Journal of Clinical and Experimental Medicine, 2016, 9(2): 5023-5030.

• Lumbar disc herniation
• selective endoscopic discectomy
• modified technique
• clinical study

In this prospective randomized study, we try to find a modified insertion technique in selective endoscopic discectomy (SED) with good outcome but lower incidence of complication. Patients with L4/5 lumbar disc herniation were enrolled from March 2009 and randomly divided into two groups which were traditional insertion group I and modified insertion group II. Compared with traditional SED technique, the direction of the tube in modified insertion technique was about 20 degrees-25 degrees cephalic inclination and the entry point moved to cranial direction. Surgical outcome and complication were compared in this study. There were 46 patients in group I and 49 patients in group II completed the follow up with 15.39 +/- 1.98 months and 15.14 +/- 2.06 months respectively. There were no significant differences in ODI and VAS scores in both group pre and post the operation. X-Ray exposure time in Group II (2.59 +/- 0.30 minutes) was lower than that in Group I (2.44 +/- 0.28 minutes) (P=0.014). Radiating pain during the operation occurred in 8 patients in group I and 2 in group II with significant inter-group difference (P=0.046). Numbness of the lower extremities occurred in five patients in Group I and none patient in Group II (P=0.027). So the modified cannula insertion technique can achieve comparable outcome with lower incidence of complication and less X-Ray exposure.

• 出版日期2016
• 单位河北医科大学